Macro Base Station Aggregating Small Cell S1 Interfaces
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Solution Overview
Problem
The increasing distribution of small cells in wireless communication networks leads to difficulties in collaborative management and effective communication data handling, as direct connections between small cells and the core network can hinder interconnection and increase network building costs.
Innovation Solution
Implementing a method to form distributed cells within a macro coverage area by connecting small cells through a macro coverage cell, using X2 and S1 interfaces, which allows for communication with neighboring cells and the core network, reducing direct connections and enhancing network management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If small cells are directly connected to the core network via S1 interface, then each small cell can independently communicate with the core network, but the number of S1 interface connections increases significantly, increasing network building costs and interconnection complexity
Solution Approach 1:
The patent introduces a macro base station as an intermediary node between small cells and the core network. The macro base station establishes X2 interfaces with small cells and aggregates their traffic, eliminating the need for direct S1 connections from each small cell to the core network. This mediator approach maintains communication capability while dramatically reducing the number of S1 interfaces required.
Solution Approach 2:
The patent merges multiple small cell connections through a single macro base station. Instead of having each small cell independently connect to the core network via separate S1 interfaces, the macro base station consolidates these connections, combining multiple small cell traffic streams into a unified connection to the core network, thereby reducing overall interface complexity.
2Productivity
If the number of small cells increases to improve network coverage and capacity, then network performance improves, but collaborative management of small cells becomes difficult and interconnection issues arise
Solution Approach 1:
The macro base station serves as a management intermediary that coordinates small cell operations. It handles inter-cell interference coordination, resource allocation, and traffic management for multiple small cells, making collaborative management feasible even as the number of small cells increases. This centralized coordination through the macro base station simplifies operational complexity.
3Productivity
If small cells are densely distributed to enhance network performance, then coverage and capacity improve, but the cost of network building increases due to more S1 interface connections
Solution Approach 1:
By introducing the macro base station as an intermediary, the patent enables dense small cell deployment without proportionally increasing S1 interface connections. The macro base station aggregates traffic from multiple small cells, allowing the network to achieve high performance through dense small cell distribution while keeping the number of expensive S1 interfaces manageable, thus reducing overall network building costs.
Data Source
AI summary
A method for implementing networking of an access network includes: implementing networking of small cells within a range covered by a macro coverage cell to form a distributed cell when number of the small cells within the range covered by the macro coverage cell reaches a threshold; and communicating the small cells in the distributed cell with neighboring cells or core network CN through the macro coverage cell in the distributed cell, where the neighboring cells include another distributed cell, a conventional cell.